CVE-2026-63237: Three Learning Koollab LMS · CWE-347
Affects Three Learning Koollab LMSSource CVE Database V5
Not known to be exploited · CVSS 4.8 Medium.
Data as of 28 Oct 2026, 05:11 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Three LearningKoollab LMS | Affected
| Fixed in– |
Description
CVE-2026-63237 is a medium severity vulnerability in Three Learning's Koollab LMS version 5.3.2. It involves a bypass of the TOTP two-factor authentication mechanism by allowing an attacker to supply a client-controlled seed, which generates a matching one-time password and bypasses the second authentication factor. This could potentially enable unauthorized access to administrator accounts.